Valve for hydrocarbon lighting systems.



M. w. PITNER. VALVE FOR HYDBOUARBON LIGHTING SYSTEMS.

APPLICATION FILED MAY 29,1907.

Patented N0v. 24, 1908.

M M 1 W..1 m y m m NnQRli m: rsx; ca, wasnmcrou, mV n UNITED STATESPATENT OFFICE.

MARION W. PITNER, OF CHICAGO, ILLINOIS.

VALVE FOR HYDROCARBON LIGHTING SYSTEMS.

To all whom it may concern:

Be it known that I, MARION NV. PITNER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Valves for Hydrocarbon LightingSystems, of which the following is a specification.

This invention relates to improvements in valves, and particularly tovalves designed for use in connection with hydrocarbon lighting fixturesand systems.

One object of the invention is to provide a valve which may be employedfor a variety of uses, either, for example, for connecting a hydrocarbonfeed pipe leading to the lamp or lamps of the system with a main feed orsupply pipe, or for connecting the hydro carbon reservoir or supply tankwith an air pump, by which air under pressure may be stored in the tankfor the purpose of feeding the hydrocarbon to the various lamps andfixtures of the system located upon the various floors of a building.

Another object of the invention is to provide a valve of this characterin which provision is made for straining the hydrocarbon on its passagetherethrough, for effectively limiting the opening movement of the valveproper therein, for etliciently coupling the hydrocarbon feed pipe tothe valve casing, and for opening communication between the system andthe external atmosphere for the purpose of withdrawing a portion of thecirculating hydrocarbon in order that its quality may be tested or toenable the operator or attendant to determine whether or not thehydrocarbon is circulating under proper pressure.

The invention consists of a valve embodying the novel features ofconstruction, com bination and arrangement of parts hereinafter fullydescribed and claimed, reference being had to the accompanying drawing,forming a part of this specification, and in which Figure 1 is a centralvertical longitudinal section of the valve. Fig. 2 is a verticaltransverse section thereof. Fig. 3 is an elevational view of thehydrocarbon screen or strainer.

Referring to the drawing, I designates the valve casing having an inletend 2 tapered and externally threaded for insertion into Specificationof Letters Patent.

Application filed May 29, 1907.

Patented Nov. 24, 1908.

Serial No. 376,313.

the socket of a supporting bracket or wall of the reservoir tank andprovided with a feed passage 3 communicating with a central verticalpassage 4 and enlarged. at its outer end to form a chamber 5 into whichprojects a screen or strainer 6. This screen or strainer is employed toscreen or strain the gasolene of its impurities on its flow from thefeed pipe to the lamps, and preferably comprises a conical or cup-shapedsheet metal body open at its inner or reduced end and provided at itsouter end with a folded portion 7 forming an outwardly extendingshoulder to limit the insertion of the strainer and a flange to clamp ascreen or strainer disk 8 of WOVQI'I wire or other material against saidshoulder. in the chamber 5 and may be conveniently removed to permitrepairs or cleansing of the parts. The opposite end 9 of the casing isformed with a threaded passage 10 enlarged at its outer end to form achamber 11, and the extremity of the portion 9 is formed to provide anexternally threaded coupling 12 engaged by a screw cap or packing nut13. A bushing 14L fits within the chamber 11 and bears upon the shoulderat the inner end of the same, and said bushing and the head of the cap13 are formed with registering openings for the passage of a stem 15carrying at its outer end an operating knob or handle 16.

A cut-off valve 17, having an extremity of conical form performing thefunction of aneedle valve, controls the feed port 3 and is provided witha threaded body portion 18 arranged to engage and operate in thethreaded passage 10, the threads of the passage and valve beingcomparatively coarse so as to permit the valve to be quickly adjusted toopen or closed position. The rear end of the threaded body portion ofthe valve forms an abutting shoulder 19 adapted to engage the bushing 11to limit the opening movement of said valve, by which its retractiveadjustment beyond a prescribed extent is prevented. Packing 20 ofasbestos or other suitable material is inclosed in the cap or nut 20 andcloses the joints between the same and the casing and the bushing andthe casing to prevent leakage from the easing of the gasolene.

Nipples 21 and 22 are arranged at right angles to the casing inalinement with each other on opposite sides thereof and are fitted Thestrainer frictionally fits withat their inner ends into the respectiveopposite sides or ends of the transverse chamber 4, being brazed,soldered, threaded or otherwise fixed in position. The nipple 21 forms adischarge connection and is externally threaded to receive a closure cap23 into which projects a conducting pipe 24: through which thehydrocarbon passing through the casing feeds to the burner or burners.Suitably fixed to the entering end of the pipe is a metallic jamb orpacking 25 of tapered form to fit within the outer end of the nipple andseal the same against the escape of the outflowing gasolene. The nipple22 is formed with a duct or passage 26 communicating at its outer endwith an enlarged threaded passage 27, from the inner end of which anescape or vent port 28 leads laterally through the wall of the nipple tothe exterior. A needle valve 29 controls the duct 26 and is threaded towork in the passage 22 and provided at its outer end with an operatingknob or handle 30.

It will be understood that the end 2 of the valve casing may beconnected with the hydrocarbon supply pipe in any preferred manner, andthat the hydrocarbon on its passage from the pipe to the casing will bescreened of its impurities by the strainer 8, which will prevent suchimpurities from passing through and clogging the burners of the lamps.Upon opening the valve 17 the hydrocarbon will flow through the passage3 into the chamber 4, and thence out through the nipple 21 to theconducting pipe 24. The opening movement of the valve 17 is limited bythe abutment of its shoulder 19 against the bushing 14, by which theopening of the valve beyond a prescribed extent is prevented. Ifdesired, the valve may be employed as a fixture for connecting an airpressure pump with the hydrocarbon reservoir of the system, in whichevent the end 2 of the casing will be fitted within a threaded openingwithin the wall of the tank and a hose or other connection from the pumpwill be coupled to the nipple 21, by which, upon opening the valve 17the air from the pump will fiow through the inlet connection 2 into thetank.

WVhen the system is in operation, it will be understood that uponturning the escape valve 29 to open the port 26 a portion of thehydrocarbon may be allowed to escape through the port 28, so that itsquality or condition may be conveniently tested at any time. By thisoperation also the system may be tested to determine whether or not thehydrocarbon is under the proper amount of pressure, as its force ofdischarge through the port 28 will indicate. Hence the valve forms aconvenient adjunct to lighting systems of the character specified forcontrolling and testing operation and may also be with a valve seat andwith a lateral escape port outwardly beyond said seat, a cut-ofi valvemounted upon the end of the casing opposite that in which said feedpassage is formed and projecting into the chamber and controllingcommunication between the feed passage and the said discharge and escapepassages, and a threaded needle valve working in the escape passage andcontrolling said seat and port.

2. A valve of the character described comprising a casing having acentral chamber,

an inlet leading through one end thereof to said chamber and formed atits inner end with a valve seat, lateral discharge and escape nipplesleading from diametrically opposite sides of the chamber, said escapenipple be ing internally threaded and provided at its inner end with avalve seat and adjacent thereto with a lateral escape port, a valveworking in the opposite end of the casing and having a needle point toengage the valve seat of the inlet and controlling communication betweenthe same and the respective nipples, and a threaded valve working in theescape nipple and having a needle point to engage the seat therein andcontrol communication between the chamber and the escape port.

3. A valve of the character described comprising a casing having acentral chamber, an inlet leading through one end thereof to saidchamber and formed at its inner end with a valve seat, the opposite endof the casing being formed with an internally threaded passage and anenlarged chamber t the outer end of said passage providing a couplingflange and an interior shoulder, a bushing inclosed in said chamber andresting against said shoulder, a cap engaging the flange, packing in thecap closing the joint between the flange and bushing, lateral dischargeand escape nipples leading from diametrically opposite sides of thechamber, said escape nipple being internally threaded and provided atits inner end with a valve seat and adjacent thereto with a lateralescape port, a threaded valve working in said threaded passage andprovided at its inner end with a needle point controlling the inlet andat its outer end with a stem projecting In testimony whereof, I aflix mysignature outwardly through the bushlng, packlng m presence of twowltnesses.

and ca and a threaded Valve workm in the QSCEILJPB nipple and having aneedle paint I MALION PITNER' to engage the seat therein and controlcom- 5 \Vitnesses:

munication between the chamber and the es- JOHN L. F LETOHER,

cape port. CHATTIN BRADWAY.

